Block.



8. Ni. SMITH.

BLOCK. APPLICATION FILED SEPT. s. 1915.

1,2223%. Patented Apr. 10,1917.

unwrap snares Parana @TFJUGE.

STEPHEN M. SMITH, 0F BOISE. IDAHO.

BLOCK.

Application filed September 5, 1916.

To all whom it may concern Be it known that I, STEPHEN M sh 11TH, a citizen of the United States, residing at Boise, in the county of Ada and State of Idaho, have invented certain new and useful Improvements in Blocks, of which the following is a specification.

This invention relates to block and tackle mechanism and more particularly to snatch blocks adapted to be used in connection with flexible power transmitting means.

One of the objects of the present invention is to provide a simple and practical block of the above general character which will permit ready application thereof to a line, both ends of which may be inaccessible. A further object is to provide a block of the above general character having relatively few parts which will be cheap to manufacture and easy to assemble. A further object is to provide a block of the first above men tioned character to which a rope or other flexible power transmitting member may be attached or to which the block may be attached for the purpose of applying additional power to the first mentioned rope; for example the device would be particularly applicable in mechanisms such as illustrated and described in my prior patent of June 2d, 1908, No. 889,448.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention. I

This invention accordingly consists in the several features of construction, combination of parts and in the unique relations of the members and in the relative proportioning and disposition thereof, all as more com pletely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure, and in such drawings like characters of reference denote corresponding parts through out all the views, in which- Figure 1 is a side elevational view of the block taken in the plane of the pulley wheel;

Fig. 2 is a central longitudinal sectional view at right angles to Fig. 1;

Fig. 3 is a side elevation of the complete device;

Specification of Letters Patent.

lPatented Apr. 16 1917.

Serial No. 118,571.

Fig. l is a disassembled perspective view.

Referring now to the drawings, 6 denotes the side plates of the block provided with the usual eye 7 at one end to which a rope or other fastening means may be attached in a well known manner. These plates are connected near their center by a pin or shaft 9 upon which a sheave or wheel 10 is mounted. To the upper part of one of the side plates 6 are secured ears 11, which are made integral with the plate, and through which passes a pin 12. Pivotally mounted upon this pin is a transverse member 13 carrying a swiveled hook 14. The end of this transverse member is provided with a hole 15 adapted to register with holes in cars 16 upon the opposite plate 6. A locking pin 17 passes through these registering holes in order to secure the transverse member in locked position when the block is in use, and is held in such position as by means of cotter pin 18. Upon the pin 12 there is also mounted a second transverse member 19 extending across to the opposite plate 6 and having its end seated partially in a recess 20 in the plate 6 and partially in a recess 21 in the transverse member 13. These two transverse members are provided with cutaway portions 22 and 23 clamped in position when it is desired to mount the block immovably upon a rope or other flexible member.

One of the side plates 5 is provided with a raised flanged portion forming a hook 24 upon its outer face while the opposite plate is provided with a plurality of hooks 25, 26 and 27, preferably open in opposite directions, and through which rope may be woven, as shown in Fig. 3. Any desired number of these may be used. Both plates are also provided near their hooked ends with upwardly projecting lugs 28, 30 and 31.

The object of this construction is primarily for the purpose of securing the block to a rope, the ends of which are not conveniently accessible, for the purpose of applying additional power to the rope as may be necessary. l-Ieretofore, this has been done by a complicated arrangement of clamps and the like, involving considerable time and trouble in the operation thereof.

It is believed that the manner of attaching the rope to the pulley, shown in dotted 1 respectively, through which a rope may be passed and subject and requires no detailed explanation. In fact, it may be attached in several different ways, one end projecting through the hooks 25, 26 and 27 and the other end substantially parallel to the hook 14.

The upper transverse member 13 may be cutaway also as shown at 32, in order to bring the pull of the rope substantially in line with the axis of the block.

It will be noted, as shown clearly in Fig. 3, that the hook member 14 is provided with a safety latch 33 adapted to hook over a projection 34: on the end of the hook member 14, thus preventing a removal of the power transmitting means that may be connected at that point. The hook and latch are made with semi-circular shanks fitting a round opening in the member 18 and capable of relative longitudinal movement to render the lock more effective and reliable. The hook as will be seen constitutes as a whole a safety swiveling hook.

With the parts in the position as shown and described the block will be immovably held on a rope, and a second rope may be passed over the sheave or wheel for any desired purpose.

While the term rope is herein used, it is of course to be given a broad interpretation to include any flexible power transmitting means, such as a wire cable or chain.

From the foregoing it will be seen that the invention is simple and practical in construction, reliable and efficient in use and operation and adapted to accomplish, among others, all of the objects and advantages herein set forth.

I realize that considerable variation is possible in the details of construction and arrangement of parts without departing from the spirit of my invention, and I therefore do not intend to limit myself to the specific form shown and described.

I claim:

1. In a block of the character described, in combination, supporting plates between which a sheave is mounted, two transverse members pivotallymounted on one of said plates and adapted to be locked to the other and between which members a rope may be clamped, and a fastening device engaging one of said members.

2. In a block of the character described, in combination, supporting plates between which a sheave is mounted, two transverse members pivotally mounted upon one of said plates, a locking device upon the other of said plates adapted to co-act with the free end of one of said transverse members to hold the same in place and a swiveled hook mounted upon one of said transverse members.

3. In a block of the character described, in combination, supporting plates between which a sheave is mounted, a pair of transverse members independently and pivotally mounted upon one of said plates, a locking device carried by the other of said plates adapted to coaot with the free end of one of said transverse members thereby to hold the other transverse member in place, and a fastening member secured to one of said transverse members.

4. In a block of the character described, in combination, supporting plates between which a sheave is mounted, a pair of transverse members independently and pivotally mounted upon one of said plates, one of which has an opening at its free end, a pair of ears on the other of said plates having openings therein adapted to register with the opening in the free end of one of said transverse members, and a locking device adapted to be inserted in said registering openings to hold one transverse member in place, one of said plates having a notched recess adapted to receive the other of said transverse members.

' 5. In a block of the character described, in combination, supporting plates between which a sheave is mounted, a pair of transverse members independently and pivotally mounted upon one of said plates one of which has an opening at its free end, a pair of cars on the other of said plates having openings therein adapted to register with the opening in the free end of one of said transverse members, and a locking device adapted to be inserted in said registering openings to hold the transverse member in place, one of said plates having a notched recess adapted to receive the other of said transverse members, said transverse members having registering cutaway portions on their adjacent surfaces to permit a rope to be clamped therebetween.

6. In a block of the character described, in combination, supporting plates between which a sheave is mounted, a plurality of hooks mounted on the outer surfaces of said plates adapted to coaot with a rope to hold the block immovable with respect to said rope, and a pair of transverse members, one of which is movable relatively to the other and between which a portion of the rope is adapted to be clamped. V

7. In a block of the character described, in combination, supporting plates between which a sheave is mounted, a plurality of which a sheave is mounted, hook and eye in its surface adjacent said first part through 10 members associated with the opposite ends which a portion of a rope is adapted to be of said plates to which ropes may be atpassed and clamped in position.

tached, a connecting member upon which one In testimony whereof I affix my signature of said parts is mounted being pivotally sein presence of two witnesses.

cured to one of said side plates and adapted STEPHEN M. SMITH. to be locked into engagement with the other Witnesses:

side plate, a transverse member associated F. L. BRoWNE,

with said last mentioned part having a notch E. F. CAMP.

flopieo 01 this patent may be obtained for five cents each, by addressing the "Commissioner of Patents. Washington, D. C. 

